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As Tuesday dawned citizens of this heavily contaminated metropolis were faced with exposed to severely hazardous air that fell into the "critical" category.

Record-Breaking Air Quality Levels

Various sections of the capital showed an pollution measurement above 500, which equals 10x the healthy threshold established by the global health authority.

Certain monitoring stations, levels of PM2.5 and PM10 hit highs of 1,800, equating to 15 to 20 times above safe levels.

Fireworks Prohibition and New Changes

For the past four years, authorities had implemented a total prohibition on the distribution and bursting of pyrotechnics during Diwali due to their significant contribution to the deadly pollution that blankets the city as winter sets in.

Nevertheless in recent months, the recently formed city leadership approached the judicial authority to request a modification of the prohibition.

Officials advocated for allowing "environmentally conscious pyrotechnics" – which have been questioned by environmentalists as being only roughly 30 percent reduced emissions – as a balance between "tradition and ecological concerns".

Legal Decision and Implementation

Much to the frustration of medical and ecological activists, judges complied with the proposal, mandating that green firecrackers could be ignited during limited time windows throughout the Diwali.

Throughout the festival evening, there was considerable disregard of the regulated periods across the metropolis, with little enforcement regarding whether the pyrotechnics being used were actually the more environmentally friendly version.

Many air quality sensors throughout the city recorded air quality spiking around midnight to some of the worst measurements seen during Diwali in at least the past three years.

Cross-Border Consequences

Extensive ignition of pyrotechnics during the celebrations also sparked a controversy with neighbouring the neighboring country, with representatives in Pakistan's the Punjab region partially attributing worsening air quality in their urban centers on pollutants originating in neighboring India following the events.

Persistent Environmental Crisis

The dangerously high levels of air contamination in Delhi have persisted as a significant challenge for more than 15 years, with the condition showing no improvement.

Near celebratory seasons, the levels of toxic particles in the air has been documented to spike to seventy percent above the peak readings ever documented in Beijing, which was once viewed as the world's most polluted urban center.

Various Pollution Sources

This crisis in the capital is resulting from a combination of various sources including heavy vehicle emissions, airborne particles, construction activities, rubbish burning and pollutants from farm burning in neighbouring areas of Punjab and Haryana.

Throughout these areas, rural residents routinely set their fields on fire to prepare for next season, generating hazardous haze that remains stagnant over the capital as winter air arrives.

Health and Economic Consequences

Public health and economic consequences on the roughly thirty-three million people residing in the Delhi area is significant, according to various investigations.

These hazardous conditions results in increased incidence of nervous system, cardiovascular and lung conditions, and can even lead to oncological diseases.

The pollution is estimated to be responsible for 10,000 early mortalities annually in Delhi.